So played around with the twin set up some on my LBZ. I started out with a billet 7 blade hooked to a 96mm wheel and a 1.32 housing. Does this thing scream LOUD!!! I use my trucks for towing so I need them to perform efficiently while towing. I quickly realized this 1.32 housing was not the ticket for me. I watched the boost from the S480 in the RPMs I tow at (1700-1900), nothing, no boost at all. Frustrated, didn't think this could be possible, but it was. I checked everything, exhaust leaks, boost leaks... anything that was found was quickly corrected. Still no boost while towing. I can get it to move some air at high RPMs, but that wouldn't make any sense pulling a 40 foot trailer. I get that some will say the S480 is too big for what Im doing, others have said its good to have the larger opening for the stock charger to breathe through.... IDK. I decided to try a smaller turbine housing, picked up a 1.15 housing from High Tech Turbo. Still no boost in the towing RPMs, it did come on at a lower RPM than the 1.32 housing. and AGAIN, that 7 blade billet wheel SCREAMS all the time, even when not making any boost. Its kinda like a lot of bark and no bite, just making noise and being annoying. Now the really fun part, sick of messing with this, I picked up a S480 batmocharger from Bullseye power, polished race cover, 87mm turbine wheel 1.1 A/R, this thing does the trick for me, at least the towing part. It is much more quieter than the billet wheel when not making any boost, but when I want to hear from it, it will definitely let its presence be known. Its not so damn ear piercing screeching loud all the time like the billet wheel. When Im towing, i put my foot in the pedal and I have boost from it. Just all around, its much better for the towing. I don't know what it'll do for those who want to race, but for me and towing, it hits the spot more so than the 96mm turbine with either the 1.32 or 1.15 housings and its soon much more reserved on the noise.